poulso-n



4 sheets-sheen 1.

(No Model.)

ROAD GRADER.

Patented July 23, v1395.

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/NVENTUH Arm/ver.

(No Model.) y 4 sheets-sheet 2, B. POULSON. BAD GRADBR.

Patented July 23, 1895. I

A TTOHNE Y.

(No Model.) 4 sheets-sheet 3.'

B. POULSON.

ROAD GRADER.

No. 543,191. Patented July 23, 1895.

EMM "PMM A TTOHNE Y.

(No Mdel.) l 4 Sheets-@Sheet A B. POULSON. y s

. ROAD GRADBR. Y 110. 543,191.. f 1 P11-16111811 Julyrzs, 1895.

vNierenV vSTATES BRifrToN PoULsoitor FORT wAYNniNDIANA.

ROADAGRADER.

SPECIFICATION forming pari-of Letters iatent No. 543.191,dated July1895. Application led llugust 13, 18245l Serial No. 520,112: (No model.)

.To a/ZZ whom it may con/cern.-

Be it known that I, BRETON PoULsoN, a citizen lof the United States,residing at the Vcity of Fort Wayne, in theI county of' Allen, in theStateot' Indiana, have invented certain new and useful Improvements inRoad- Graders; and I do hereby declare that the following is afull,'clear, and exact descriptionof the invention, which will enableothers skilled; in theartto which it appertains to make and use thesame, reference being had to the accompanying drawings, which formpartof this specification.

My invention relates to improvements in road-graders of the class knownas wheeled scrapers,. in which'the scraper-blade is sup- Vported by aframe mounted on wheels.

The objects of my inventionare to provide an improved device forsupporting the tongue; to provide improved means for extending the: rearaxles and adjusting them to any desired angle; to provide convenient andefcient means for adjusting the scraper-blade verti- A cally andlaterally; to provide improved means for the adjustment of thescraper-blade at different angles to the line of propulsion and forreversing; to provideimproved means for adjusting the pitch of' thescraper-blade and to provide an improved road-machine of` moreeconomical construction and direct action tothe work required ;v and theinvention` consists in the construction and novel combi` nation of partshereinafter described, pointedv out in the appended claims, andillustrated in the accompanying drawings, in which i Figure 1 is atopview of the machine. Fig; 2 is an elevation of the machine viewed fromthe rear, partly in section, on line ocx of Fig. 5. Fig. 3 is a verticalcross-section of the ad-v justing devices of the extensionaxle. Fig.'4tis arear elevation of tho devices shown in Fig. 3. Fig. 5 is a sideelevation of the machine with part of the frame l broken away to giveroom for the working parts. Fig. 6 is a vertical section ofthe elevatingand locking device of the scraper-blade; and Fig. 7 is a side view ofthe same device last named.

Fig. 8 is a sectional view of the under side of the rotating frame,showing its connection with the circular frame; and Fig. 9 is a frontelevation of one side of the rocking frame and t -its connection withthe rotating frame, the

latter in section.

The references are by numerals. The main frame of the machine consistsof two side bars 10, extendingfrom the rear axle to the front axle, andthe circular frame 13 attached thereto, as shown in Fig. 1. The

`forwardends of these side bars 10, forming the draw-bar, are broughtnearly together and firmly secured to a head-block 14, which is heldrevolubly in place on the front axle by the bolt 15, Fig. 5. These sidebars 10 are also curved to form a goose-neck 16, under which the frontwheels 17 may pass, so as to turn shortly. The center part of these sidebars 10 are expanded or curved outwardly about half way between theaxles and'are adapted to support and be firmly attached t`o\r V acircular frame 13, which thereby is made to'form part of the main frame.This circular frame 13 is made, preferably, of channeliron, with itsflanges on the inner periphery, and is firmly attached to the draw-bars10. The upper flange 18 of this circular frame 13 is provided with cogs19 around its entire periphery. A rotating frame which supports themechanism for the various adjustments of the scraper-blade 21 is mountedin the channel of the circular frame 13, as shown in Fig. 1.

The rotating frame consists essentially of two supports or mainstandards 23 which partly enter and are held in place in said channel atopposite sides by a cross-bar 20, as shown iu Fig. 8. These mainstandards 23 are also further secured in place by braces 24 in front andbraces 25 iu rear. The front braces 24; are preferably of onepiece,their junction-point forming a bearing 2l which enters in and is held inplace by said channel. The rear braces 25 are attached at theirjunctionto a hollow standard 26, a portion of which projects into the saidchannel, by which construction the rotating frame is held firmlyandrotatably in place in the circular frame 13. provided with Verticalplates or flanges 22, formed integrally, to furnish means to aid inlimiting the motion of the rocking frame, dac.,

These main standards 23 are preferably IOO as hereinafter described.This hollow standard 26 furnishes my preferred Ameans to support themechanism for revolving the rotating frame, which consists of a shaft 27and pinion 28 meshing in the cogs 19 of the circular frame 13 and ahand-wheel 29 to operate the shaft 27.

The main standards 23 are provided with means to lock them in place whenthe proper angular adjustment of the blade 2l has been erably providedwith a knob 34 having such weight, that when in locking position thelocking parts are held in place by its gravity, because the rod 33 withits knob 34 falls back of the center of the rod 30. It is also soadjusted that when reversed it unlocks the parts and falls forward ofthe center and holds by its weight without having to be held by theoperator in either position. Thescraperblade 2l being suitably connectedto the main standards 23 by intervening mechanism, the mechanismdescribed constitutes the means for its angular' adjustment and forreversing.

To regulate the pitch of the scraper-blade2iJ rocking frame is pivotallymounted between and attached to these main standards 23. It consists oftwo curved standards 36 (right and left) and brace-bars holding themrigidly in place, one 37 at the top, one 38 in the center, and one 39 atthe bottom. These curved standards 36 are preferably provided with aange 40, projecting on one side for strength, and to them the braces 37,3S, and 39 are rigidly attached, forming a solid rocking frame. Thelower ends of the curved standards 36 are attached to the main standards23 by pivot-bolts,

41, forming a strong pivotal connection upon which the rocking frame isswung backward or forward. The bolts 4l pass through bosses 41', whichare attached to the lower ends of the standards 36. (See Fig. 9.) Theliftingarms 42 of the scraper-blade 2l are held and guided by thesecurved standards 36 by suitable mechanism, conning them to averticalmotion in the same or in coincident lines therewith.

The scraper-blade 2l is attached rmly to the lower ends of thelifting-arms 42, and is then adjusted to any desired pitch by incliningthe lifting-arms 42 backward or forward. This is done by moving therocking frame, which carries them on its pivot-bolts4l. Such pitch isretained by suitable mechanism engaging the segment-rack 22', formed onthe upper end of the main standard-anges 22. My preferred mechanisms forsuch engagement consist of a locking-bar 43, provided with slots throughwhich bolts 45 pass and secure it to the flange 40 of the curvedstandards 36 of the rocking frame, the slots perjections 55. v.thescraper-blade is provided with perfora- Malet mitting alimited lateralmotion of the bar 43. The endsof this locking-bar 43 are provided withcogs or projections 43', adapted to engage the segment-rack 22 of themain standardflanges 22 when the bar 43 is moved in one direction and tobe disengaged when moved in another direction, and it is also providedwith means to secure it in position. For such means I form a projectionof plate 47 at or near the center of the bar 43, extended up on one sideof the center brace-bar 33 of the rocking frame and secured thereto byabolt 43 operated by a hand-wheel 49 on the opposite side. Thisconstruction furnishes the means whereby the scraper-blade 2l isadjusted to and in any required pitch to its work, according tothedifferent kinds of soil to be handled.

For the particular purpose of adjusting the pitch of the blade thestandards 36 need not be curved, but such curved form is preferable inmy mechanism for lateral adjustment of the scraper-blade 2l, which Iwill now describe in connection with my device for vertical adjustmentof the scraper-blade.

The curved standards 36 of the rocking frame are curved outwardly,forming segments of a circle. On the inner sides of these standards 36,which is their outer periphery, T-shaped lifting-arms 42, curved on thesame radius, rest with their flat sides against the curved standards 36and are held movably in place thereon by guides 50, attached thereto.The upper ends of the T-edges 5l of these lifting-arms 42 are providedwith rack-gears '52 for about one-third of their length, for thevpurpose `of raising and lowering them by means of pinions meshing in therack-gears. The lower ends of these lifting-arms 42 are attached to thescraper-blade 2l in any suitable manner; but I prefer to attach to theends of the lifting-arms a rocking block 53 by a pivot bolt 54,wherebythe block rotates in a vertical plane in front of the arms 42. Thisblock 53 is constructed with half V-shaped projections 55 on their upperand lower ends,

` and the scraper-blade is provided with flanges 60 upon its back,riveted thereto and forming guides or ways adapted to slide in and beheld and guided by these half V-shaped pro- The lower ange on the backof tions 61, into which dogs 62, pivoted to the block 53, drop, andthereby lock the scraperblade 2l in position. These. dogs (S2-areoperated by means of connecting-rods 63, extending upward along thesides of the T 5l of the lifting-arms 42, and are provided with aT-handle 64 to lift them out of engagement, and they are held in suchposition by the ends of the T-handle 64 engaging loops 65 on thelifting-arms 42.

It will be seen from the construction that when the dogs 62 are held upout of engagement the scraper-blade 2l can be removed entirely out ofconnection with the blocks 53 for repairs and sharpening, and that whenit is slid and held 4in place by means of its IIO V543,191 i l l s angesGO and the half V-shaped projections 55 of the blocks 53 and both dogs62-arethen :be raised up vout of engagement, andas the blade 21- isdrawn upward `it will then slide through the disengaged block 53 freely,out or in, as it is raised or lowered. It is also evident that when itis lowered the blade 21 slides outward from the main frame on the sideon which the dog 62 holds the scraper` blade 21 in place to the block.This move# nient outward is by virtue ofthe circle of the lifting-arm,which carries it outwardly as it is moved down and draws the bladeinwardly as it is moved upward, so that to give a lateral motion of the-blade 2l on either side of the machine, as desired, the scraper-blade2l is locked by means of the dogs 62 to the block on the` side on whichit is desired to extend the blade 21, and is disengaged to have freemovement inthe opposite block 53. lVhen no lateral movement is required,both blocks 62 are disengaged and the lifting-arms are lowered until theblade is in position, and

the blade is then locked by the dogs. Ordi# narily the lateral extensionrequired can thus be secured, but sometimes it is desired to iu-` creasethelateralextension of theblade. Todo so-say to the right-the left blockis lockedv 'to the blade by its dog, as described, and the right onedisengaged and raised by thelift-l ing-arm. As it is raised the block isthereby drawn inwardly and toward the center of the bladeV and issecured there by its dog. Then the lifting-block is disengaged and theright lifting-arm lowered into position, thereby moving its block andvthe attached blade downwardly and' outwardly farther to the right thanbefore. This operation may be repeated until the extreme limit ofextension is reached. These lifting-arn1s 42 are raised or lowered andlocked in place independently of eachother by any suitable means, but Iprefer the construction shown in Fig. 1, which `consists of a shaft 66and pinion 67 held in' engagement with the rack-gear 52 of the lift`-upon one side, which engages the teeth 7l of this nut. The blank sideof the stirrup 73 serves to hold these two parts in engagement'. At oneend of this stirrup 73 is a slotted projection- 75, through which a bolt76 4passes and assists in holding the Astirrup 73 to the face of thewheel 68. The opposite end of this stirrup 73 is provided with anextensionbar 77, having a rack 78 on its end, which extends and isguided between two lugs 79 attached to the rim of the wheel 68.- Thehandle 8O is provided at one end with a segmentalj head 81, which ispivoted between these two lugs 79' and is therebyheld in engagement withthe rack 74 of the stirrup.- When the 'handle 80 is raised so as to beat a right angle to the plane of the wheel 68, it is in position foroperating, for the nut has been loosened by the movement ofthestirr'up-rack 74, so the pinion-shaft 66 will turn freely. Thelifting-arms 42 may then be raised or lowered independently of eachother, as desired, and when adjusted the handle 80 is moved down on theface of the wheel 68,y the gear connections operated by this motionturning the' nut 70 tight, thereby drawingv the wheel 68 and the collarof the pinionshaft 66 tight against the sides of its bearing, thuslocking the shaft 66 and thelifting-arms 42 in the position placed.

' My construction for the extension of the axles consists in providingtwo halt-axles 82 to the rear end of the machine to be movedindependently,-and also mechanism for tilting them, so as tothrow thewheel atan angle tothe plane of the frame, and is as follows: To therear end of the side bars 1O of the mainframe I secure two brackets 85,re-

spectively, which extend downward, as shown in Fig. 5, and are suitablybraced thereto. To the lower ends of these brackets 85 a crossbar 84 isrigidly secured, forming a rear brace to the main frame. At each end ofthis erossbar 84 segment-racks 86 are formed on top and extended upwardfor the purpose of affording Lpart of the means by which the tiltingblocks 87 are locked in place. The tilting blocks 87 are pivoted to eachend of this cross-bar 84, the pivot-centers coinciding` with the centersof the segment-racks 86. The pivot-bolts 88 for this lpurpose extendthrough and beyond the tilting blocks 87, and their ends are providedwith screwthreads, as shown in Fig. 3. These tilting blocks 87 arerecessed through their center' to receive the axles 82 anda wedge-block89, which has a straight side against the axle and an inclined orbeveled side opposite thereto, that side of the tilting block beingbeveled outwardly to correspond thereto, so that when the wedge-block 89is forced into the recess it binds the axle firmly in and to the tiltingblocks 87, which are then secured rigidly to the cross-bar 84.' Thepreferred mechanism for so securing. the blocks 87 isa foot-nut 90 on'the end of the pivot-bolt 88, the-exteusion-arms 91 of which affordmeans for the operator to turn it with his feet. The half-axles 82 arethus held in these tilting' blocks 87, and alsoheld to the frame, by

IOO

means of the foot-nut 90, forcing the Wedgefrom the frame by anysuitable means. I prefer the construction shown inthe drawings, whichconsists of a rocking lever 92, pivoted on' the same pivot-bolt 38, itsupper end provided with a segmental rack 93, and its lower end pivotedto a connecting-rod 94, which extends and is pivoted to the inner end ofthe ,half-axle S2. rlhe rocking lever 92 is provided on its inner sidewith a hub or boss 95, which impinges against the wedgeblock 89, and onthis boss a hand-lever 9G, provided at that end with a longitudinal slot97, is mounted to operate the segment-rack 93 of the. rocking lever 92.The hand-lever 96 is provided with a projection extended over and downupon the segmental rack 93 of the rocking lever 92, and has a tooth 99on its inner side, which is adapted to engage the teeth of saidsegmental rack 93. So when the axle 82 is free to be operated, the'operator drops the lever down until this tooth 99 engages the cogs ofthe segmental rack 93, and thereby is enabled to move it backward orforward, carrying the attached axle in and out from the mainframe. Whenthe axle has been moved in or out toits desired position, the operatorlocks the parts in place by operating the foot-nut and turning it uptightly, whereby all the parts are rmly and rigidly bound to thecross-bar Si. Y

The means tor tilting the axle 82 consists of an extension 100 on top ofand attached to the tilting block S7, provided with a slot at its upperend and also a slotted projection 102 on one side extending over anddown upon the segment-rack 86 of the cross-bar 8i.

A at dog 103, provided with a handle 104 at its upper end, is held inplace in the slotted parts of said extension 100 and projection 102 bybolts 105 passing up through them, andis adapted to engage the cogs ofsaid segmental rack 86. This dat dog 103 has also another function. Whenit is raised up out of engagement the upper endis adapted to passbetween two lugs 106, attached to the inner side of the hand-lever 96,whereby the hand-lever when thus engaged tilts the blocks 87 and itsattached axle 82 to any desired angle. The fiat dog 103 is then pusheddown into engagement with the segmental rack 86, thereby locking theblock 87, the foot-nut tightened, andthe parts are then held rigidly inthe position given them. By this construction, when the dog 103 israised it engages the hand-lever 96 and ydisengages the rocking block,so that the operation of the hand-lever then tilts all the partstogether. When the flat dog is lowered into engagement with the rack ofthe cross-bar, the rocking block is locked in position and thehand-lever can operate only to move the half-axles.

The construction for holding the tongue is as follows, (see Fig. 5:) Ontop of the headblock an upright shaft 107 is secured, upon which abracket 108 is held pivotally for the purpose of turning with thetongue. Its arm 109 extends o ut over the tongue and is provided with anorifice 110 in its end, through which a rod 111 passes. One end of thisrod 111 is suitably secured to the tongue and is provided with a threadand thumb-nut. 112 on the other end. Between the thumb-nut and the topof the bracket a spiral spring 113 is placed around the rod, and bymeans of the lhumbnut 112 the rod 111 is adjusted. to retain the tonguein any given eleavtion. By this construction the horses are relievedfrom the weightof the tongue, and may raise or lower it when emergencyrequires, the spring device admitting of such change of position.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a road grader of the class named, a frame for the support of thescraper blade and its mechanism, consisting of two side bars extendedfrom the rear to the front axle, the

forward ends being brought together and y suitably secured to the frontaxle, and curved so as to form a goose neck under which the front wheelsmay pass; the said side bars being expanded or curved outwardly neartheir center part and adapted to support and bev firmly attached to acircular frame: a'circular frame firmly attached to said side bars, andforming part of the main frame and adapted to support the mechanism forelevating and rotating and the lateral adjustments of the scraper blade:and mechanism for elevating, rotating and laterally adjusting thescraper blade, suitably connected to said circular frame.

2. In a road grader of the class named, a circular frame made ofchanneliron,with the anges on the inner periphery, and rigidly attachedto the main frame of the machine: cogs formed upon one of the flanges ofsaid circular frame around the entire periphery: mechanism forsupporting the scraper blade and providing for its various adjustmentsYmounted in the said circular frame: a hand wheel, shaft, and pinion,suitably mounted with the pinion meshing with the cogs of saidcirculaiframe and adapted to rotate the said mechanism.

3. In a road grader of the class named, a circular frame secured rigidlyto the main frame of the machine, and provided with rack gear around itsperiphery: a rotating frame for operating the mechanism for the variousadjustments of the scraper blade, consisting of two main supports orstandards therefor, and guided in place within said circular frame bysuitable mechanism, and adapted to be rotated therein: means to rotatesaid frame in said circular frame: mechanism for the varions adjustmentsof the scraper blade secured to said rotatingframe: and a scraper bladesuitably attached to said mechanism.

4. In a road grader of the class named, a

circular frame rigidly attached to the main frame of the machine, andprovided with rack gear around its periphery: a rotating frame foroperating the mechanism for the various IIO IIS

s so

adjustments of the scraper blade, consisting of two main supports orstandards therefor,

held and guided in place on the sides of said circular frame, andadapted toberotated therein: means to rotate said frame in said circularframe: mechanism for the various adjustments of the scraper bladesecured to said rotatingy frame:` a scraper blade suitably attachedtosaid mechanismza rocking rod journaled in the bearings in the mainstandards and extending beyond them and provided on each end on theoutsideof the main standards with a falling segment adapted to engagethe circular frame so as to lock the rotating frame in place at anypoint of angular adjustment: and means to operate said rod.

5. In a road grader of the class named, a main frame consisting of twoside bars extending from the front to the rear axles: a circular frame'fixed rigidly to said side bars:

a rocking frame adapted to be revolved within said circular frame,consisting essentially ot' two main standards held and guided in theopposite sides of said circular frame: and a rocking frame pivotallymounted between and attached to said standards, Aconsisting of twovertical standards adapted to form guides for the lifting arms of thescraper blade extended above the circular frame and held or bracedrigidly in place by suitable braces: lifting arms adapted to slide uponsaid standards and be secured thereto: ascraper blade attached to thelower ends of said lifting rod: and means to lock the frame and liftingrods at any angle or pitch `of the blade.

6. -In a road grader of the class named, a circular frame suitably fixedand secured to the main frame, provided with rack gear extending aroundits inner periphery: a rotating frame mounted revolubly in said circularframe, having main standardsfor the support of the mechanism for theadjustment of the scraper blade and its upper ends expanded in segmentform and provided with serrations or cogs: a rocking frame pivotallymounted and attached to and between the main standards, consisting oftwo curved standards held on opposite sides to each other by suitablebraces: mechanism attached to said curved standards adapted to lock therocking frame inv place by engaging the cogs upon the upper ends of saidmainV standards so as to hold the curved standards rigidly at anyvertical angle atv which they may be placed.

'7. In a road grader of the class named, a

'circular frame secured rigidly to the main frame-and provided with rackgear extending around its inner periphery: a rotating frame t mountedrevolubly in said circular frame, having main standards for the supportof the mechanism for the adjustment ot' the scraper blade, the upperends of the main standards being expanded in segment form and providedwith seri-ations or cogs: a rocking frame pivotallymounted and attachedto and between the main standards, consisting of two curvedstandards-held on opposite sides to each other by suitable braces:mechanism attached to said curved standards adapted to lock the same inplace by engaging the cogs upon the upper ends of said main standards,so as to hold them at any vertical angle at whichthey may be placed:curved elevating arms mounted in guides attached to said curvedstandards'and held and guided thereby, and provided at their upper endswith rack gear: mechanism to operate said rack gear: and a scraper bladeattached to the lower' ends of said liftingarms. t

8. In a road grader of the class named, a circular frame rigidly securedto the Vmain frame and provided with rack gear extending around itsinner periphery: a rotating frame mounted revolubly in said circularframe, having main standardst'or the support of the mechanism for theadjustment of the scraper blade, the upper ends of the main standardsbeing expanded in segment form and pro.

vided with serrations or cogs: a rocking frame pivotally mounted andattached to. and between the main standards, consisting of two curvedstandards adapted to form guides for the lifting arms and held onopposite sides of the circular frame by suitable braces: mechanismattached to said curved standards adapted to lock the same in place byengaging the cogs upon the upper endsof saidmain standards, so as tohold them at any required vertical angle: curved lifting arms for thescraper blade .mounted in guides attached to said curved standards andheld and guided thereby, and provided at their upper ends with rackgear: mechanism to operate said `rack gear: rocking blocks pivotallyattached to the lower ends of the lifting. arms provided with recesses,the upper and lower .sides of which are half V-shaped inwardly, so as toform a dove-tailed guide or slot: a scraper blade provided with angessecured Vto 4the backepart thereof, adapted to form guides or, ways toslide in and be held by the half .V- shaped projections on the rockingblocks:.and means to secure said scraper blade in place in said blocks.t Y

9. Ina road'grader of the class nameda,cir cular frame rigidly securedto the mainframe and provided with rack gear extending around its innerperiphery: a rotating frame mounted revolubly in said circular frame andprovided with main standards for the support of the ,mechanism for theadjustment ot' the scraper mechanism adapted to lock the main standardsand curved vstandards at any angle to each other when required: curvedlifting arms IOO mounted in guides attached to said curved arms, andheld and guided thereby, andproing arms: rocking blocks pivotallyattached to the lower ends of the lifting arnis and provided withrecesses,the upper and lower sides of which are half V-shaped inwardly,so as to form a dove-tailed guide or slot: a scraper blade provided withanges secured to the back part thereof, an d adapted to form guides orWays to slide in and be held by the half V- shaped projections on therocking blocks: perforationsin one of the flanges of the scraper blade,and dogs adapted to engage said perforations, and means to operate thedogs.

lO. In a road grader of the class named, a circular frame rigidlysecured to the main frame of the machine: a rotating frame mounted inand adapted to be revolved therein upon said circular frame and providedwith two standards on opposite sides adapted to support the mechanismforsupporting the scraper blade: a rocking frame consisting of twovertically f arranged supports held in place by suitable braces andpivotally attached at their lower ends to said standards of saidrotating frame: lifting arms adapted to slide upon said verticalsupports and be held in place thereby: a scraper blade attached to thelower ends of the lifting arms: a shaft and pinion mounted inprojections attached to the upper end of said standards, and heldinengagement with a rack on'the upper end of said arms: -a crank wheelmounted u pon the end of said shaft: a nut adapted to clamp said wheeland a collar to said shaft firmly against the bearing between them, forthe purpose of locking said shaft: a stirrup placed upon the outer faceof said Wheel, provided with a rack upon one side, which engages theteeth formed on said nut: a slotted projection cn one end of saidstirrup through which a bolt passes to assist in holding the stirrupmovably to the face of the wheel: an extension bar on the other end ofthe stirrup having rack teeth on its end and extending between two lugsattached to the rim of the wheel.: a handle provided at one end with asegmental rack and pivoted be tween said two lugs, so as to be held inengagement with the said rack on said extension; as and for the purposesubstantially as described.

1l. In a road grader of the class named, brackets securely attached to-the rear ends of the side bars forming the main frame and extendeddownward: a cross bar rigidly se cured to the lower ends of saidbrackets and provided with segment racks on top at each end: a tiltingblock mounted on a pivot bolt cess: means to force said wedge firmlyinto said block and bind the parts securely to the tilting block: andmeans to move said axles in or out from the main frame: and means totilt said block so as to place the halfv axles at any incline to themain frame whichV may be required, and secure the block firmly in thposition required.

12. In a road-grader of the class named, two half axles secured inblocks attached to the rear end or cross bar of the frame, said blocksbeing recessed to receive and hold said axles: wedge blocks adapted tobind said half axles in said blocks: means to force said wedge blocks inplace and means to extend said half axle in and out from the main frameas described.

13. In a road grader of the class named, an upright shaft attached tothe front axle or to the mechanism supporting the frame thereon: abracket mounted on said frame so as to turn with the tongue: an arm tosaid bracket extending out over the tongue and provided with an orificein its end: a rod suitably secured to said tongue and passing up throughsaid orifice, and provided with a thread and thumb nut above saidbracket: and a spiral spring placed around said rod between the thumbnut and said bracket, for the purpose and substantially as described. l

14. In a road grader of the class named, a frame consisting of two sidebars brought together in front and suitably pivoted to the front axle,adapted in the center part to inclose a circular frame: bracketsattached to the rear ends of said side bars extending downward: a crossbeam secured to said brackets: a circular frame securely attached to theside bars and provided with a segment rack: a rotating frame mountedrevolnbly in said circular frame: a hand wheel,shaft and pinion mountedupon said rotating frame with the pinion engaging the teeth of saidsegment rack: standards attached to the rotat ing frame for supportingthe mechanism operating the scraper blade laterally and vertically: andmechanism supporting the scraper blade, and adapted to lower and raisethe same at the will ofthe operator and to laterally adjust the samemounted in said rotating frame.

15. In a road grader of the class named, a frame consisting of two side'bars brought together in front and suitably pivoted to the frontaxle-adapted in the center part tofinclose a circular frame: bracketsattached to the rear ends of said cross bars, extending downward: across bar or beam secured to said brackets: a circular frame securelyfixed to said side bars and provided with a segment rack: a rotatingframe mounted revolnbly in said circular frame: a hand wheel, shaft andpinion mounted upon said rotating frame with the pinion engaging theteeth of the segment rack: supports or standards for -the attachment andsupport of the mechanism operating the scraper blade secured to andform- IGS] . to the brackets -below the plane of the main ing part ofsaid rotating frame: a rocking frame consisting of standards to supportand guide the lifting arms suitably braced and A mounted pivotallyin andbetween the standards attached tothe rotating frame: guides formed onsaid standards `of said rocking frame: lifting arms for the scraperblade held in and guided by said'guides, their lower ends attached to`the scraper blade: and means to elevate and lower the lifting rods atwill.

16. In 'a road grader of the class named, a circular frame securedrigidly to the main frame and provided with a segment rack: bracketsattached to the rear ends of the main frame and extended-downward: across beam secured to said brackets: blocks secured on either end ofsaid cross beam, provided with recesses for twovhalf axles to be heldand moved inwardly or outwardly from the frame: means to bind or locksaid half axles at any given place in said blocks: 'a rotating frameprovided with supports or standards for the mechanism operating thescraper blade, mounted revolubly insaid circular frame,.and providedwith a shaft and pinion meshing in said segment rack: means to operatesaid pinion: mechanism attached to the standards- .scraper blade andelevate and lower the same at either end at the will of the operator.

17. In a road grader of the class named, a circular frame securely-fixedto the main frame and provided with a segment rack: brackets attached tothe rear ends of said main frame: a cross beam securely attached frameand extended the full width of the frame: blocks attached to said crossbeam at either end, provided with recesses to hold and permit aV slidingmovement of two separate half axles: means to hold and lock said halfaxles-in place at any given point of extension: means toextend said halfaxles separately at will of the operator: and means to rotate saidblocks withtheir attached axles so as to'place the axles' separately atany given angle toV the plane-of the frame: a rotating frame mountedrevolubly in said circular frame and provided with means to rotate thesame: mechanism for the support of the scraper blade attached to saidrotating frame and adapted to lower or elevate the scraper blade oneither side separately'at will of the operator.

18. In a road grader of the class named, a circular frame securely fixedto the main frame and provided with a segment rack: a rotating framemounted revolubly in or upon said circular frame, and provided withstandards for the'support of the mechanism operating the scraper bladelaterally and vertically: a hand wheel,shaft, and pinion mounted in saidrotating frame with the pinion meshing with the teeth of said segmentrack: a rocking frame provided with two curved standards pivoted attheir lowerV ends on either side to the standards of said rotatingframe: guides formed on said curved standards to receive and hold inplace the lifting arms of the scraper blade: lifting arms tothe scraperblade mounted in guides: means to elevate and lower said lifting armsseparately at will and lock them in place vertically: blocks attached tothelower ends of the lifting arms, provided with means to vhold thescraper blade adjustably in or to them: means to bind said scraper bladein place in the blocks, and-to release them separately so as to permit alateral movement of the scraper blade.

19. In a road grader of the class named, 'a circular frame securelyfixed to the main frame: a rotating frame mounted in said circular frameadapted lto be rotated orrevolved therein: means to rotate said fratrieand lock it inplace when the proper angular adjustment has been secured:standards attached to said rotating frame and forming part of it,adapted to support the mechanism ot the scraper blade'for lateral andvertical adjust- Ament: a rocking frame consisting of two verticalstandards pivoted at their lower ends to thestandards of said rotatingframe: means to incline the'same backward or forward and lock them inplace at any suitable angle: guides upon said vertical standards adaptedto support` and guide the lifting rods o'f the scraper blade: liftingrods for the scraper blade mounted in guides: means to elevate and lowerthem at will, separately: blocks attached to the lower ends of' saidlifting rods, provided with recesses adapted to hold projections uponthe scraper blade: a scraper blade provided with projections'adapted tomove in and be guided by the recesses of said blocks: means to lock thescraper blade in said blocks separately: brackets attached to the rearends of the frame of said machine on either side thereof: a cross barattached to the lower end of said brackets and 'securely' braeingthe.same: blocks attached to either side of said cross bar provided withrecesses adapted to secure a sliding movement therein of the two halfaxles: two half axles mounted in said blocks: means to lock and bindthem 'in-place in said blocks: and means to extend bars securing thesame lin place: the flange 40: pivot bolts 4l securing the lower ends ofthe standards to the rotating frame: lifting arms 42: the looking bar43, provided with means to lock the rocking frame in place: guides 50iOO IIO

for the lifting arms of the scraper blade: rack gear 52 on the liftingarms: rockingblocks 53 on the lower ends ofthe lifting rods, pivotallyattached thereto-the blocks being provided with V-shaped recesses:flanges 60 on the scraper blade: perforations G1 in said tianges: dogs62pivoted tothe blocks: connecting rods 63 connected to the dogs foroperating: means to elevate and lower the lifting arms 4of the scraperblade: brackets 85 attached to the rear end of the frame: a cross bar 84attached to the dogs: tilting blocks 87 provided with recesses Yadaptedto hold half axles: half axles 82 sliding in recesses in said tiltingblocks: wedge blocks 89: the pivotv bolt 88 passing` through the tiltingblocks andprovided atits end with a foot nut 90: a rocking lever 92: thesegment-al' rack 93 on said lever: connecting rod Qt: hand lever 96:projection 98 on said lever: teeth 99 on the inner side of saidprojection: the extension 100 on top of the rocking block provided witha slot at its upper end and also with a slotted projection 102: Hat dog103 provided with a handle: lugs 106 on the inner side of the handlever, substantially as and for the purpose described.

2l. In a road grader of the class named, a frame forthe support of thescraper blade and its mechanism, consisting of two side bars extendedfrom the rear to the front axle, the forward ends being brought togetherand suitablyT secured to the front axles, and the rear ends providedwith brackets attached thereto and suitably braced: a cross bar securedto said brackets rigidly 4holding them in place: the said side barsbeing expanded orcurved outwardly near their center part and adapted tosupport and be firmly attached to a circular frame: a circular framefirmly attached to said side bars and formed of channel iron, andprovided with rack teeth on the upper channel: a rotating frame conlsisting of two main supports or standards suitably braced and adapted tobe guided and rotated within the channel of said circular frame: a handwheel, shaft, and pinion mounted in said rotating frame, the pinion omeshing with the teeth ot' said circular frame:

a rocking rod journalcd in the bearings in the main standards andextending beyond them, and provided on one end, on the outside of themain standards, with a falling segment adapted to engage the cogs in thecircular frame, so as to lock the rotating frame at any point of angularadjustment: a rocking frame consisting of two curved standards adaptedto form guides for the lifting arms of the scraper blade, suitablybraced in place, the lower ends being pivotally attached to thestandards of the rotating frame: cogs formed on the upper ends of themain standards: a locking bar attached to said curved standards andadapted to lock the rocking frame in place by engaging the said cogs onthe main standards: curved lifting arms for the scraper blade mounted inguides attached to said curved standards and held and guided thereby,and provided at their upper end with rack gear: a shaft and pinionmeshing in the projections attached to the upper end of said curvedstandards and held in engagement with the rack on the uppercnd of saidlifting arms: a hand wheel mounted on the end of said shaft: a nutadapted to clamp said wheel and collar to said shaft firmly against thebearing between them, to lock said shaft in place: astirrup placed uponthe outer face of said wheel, provided with a rack upon one side, whichengages the teeth formed on said nut: a slotted projection on one end ofsaid stirrup through which a bolt passes to assist in holding thestirrup movably to the face of 'the wheel: an extension bar on the otherend of the stirrup having rack teeth on its end and extended between twolugs attached tothe rim ofthe wheel: a handle, provided at one end witha segmental rack and pivoted between said lugs so as to be held inengagement with said rack on said extension: rocking blocks pivotallyattached. to the lower ends of said lifting arms and provided withrecesses, adapted to hold tlanges attached to the scraper blade andpermita lateral motion: a scraper blade provided with flanges secured tothe back thereof and adapted to form guides or ways and to slidein andbe held by the recessed portion of the rocking blocks: perforations inone of the flanges of said scraper blade: dogs adapted to engage saidperforations: a connecting rod attached to said dogs extending upwardand provided with a handle in easy reach of the operator, to operatesaid dogs: segment racks formed on the ends of the cross bar attached tosaid brackets at the end of the frame: tilting blocks mounted on pivotbolts through the end of said crossbar, the centers or axis coincidingwith the cen-ter of thesegment racks-the .tilting blocks being recessedthrough their center part and each adapted to receive therein a halt'axle and a wedge block: two half axles placed within said recessesoutside of the tilting blocks: wedge blocks placed within said recesseson one side of said half axles and having the upper sides inclined orbev# eled, and adapted to bind said axles firmly in the tilting blockswhen forced into the recesses: a foot nut on the end of the pivot boltupon which the tilting blocks turn, and adapted to clamp and force thewedge block. into place: half axles 82 adapted to slide in and be heldin the tilting blocks 87: the rocking lever 92 provided with a segmentalrack 93: the connecting rod 94 pivoted to the rocking lever at one endand to the inner end of the halt axles at the other end: a hub or bosson the inner side ot' the rocking lever through Awhich the pivot bolt 88passes: a hand lever 96 provided with alongitudinal slot mounted on saidhub or boss, and also provided with a projection extended over and downupon the segmental rack 93, and provided with a tooth 99: the extension100 on top of the tilting blocks, provided with a slotted projection102:

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'the flat dog 103 provided with a handle, heid nut and the end of thebracket 108, al1 substan- 1o and guided in the slotted parts of saidextentially as and for the purpose describd.

sion 100 and projection 102: the upright shaft In testimony whereof Ihereunto subscribe 107 on top of the head block: the bracket 108 myname, in the presence of two witnesses, providedwirth its arms '109 andhaving an vthis 4th-day of August, 1894.

orifice 110 in its end: aliftin g rod 111 attached BRITTON POULSON. tothe tongue at one end and provided with Witnesses:

a thread and thumb nut 112 at the other end: H. C. COOLICAN,

the spiral spring 113 placed between the thumb H. C. HARTMAN. v

